./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85b77735b82f790dcf6393a6fb65098490b7c65f26539a1354e286eeb25926e8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:08:22,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:08:22,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:08:22,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:08:22,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:08:22,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:08:22,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:08:22,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:08:22,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:08:22,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:08:22,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:08:22,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:08:22,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:08:22,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:08:22,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:08:22,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:08:22,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:08:22,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:08:22,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:08:22,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:08:22,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:08:22,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:08:22,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:08:22,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:08:22,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:08:22,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:08:22,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:08:22,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:08:22,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:08:22,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:08:22,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:08:22,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:08:22,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:08:22,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:08:22,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:08:22,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:08:22,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:08:22,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:08:22,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:08:22,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:08:22,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:08:22,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:08:22,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:08:22,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:08:22,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:08:22,290 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:08:22,290 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:08:22,290 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:08:22,290 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:08:22,290 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:08:22,291 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:08:22,291 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:08:22,292 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:08:22,293 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:08:22,293 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:08:22,293 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:08:22,293 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:08:22,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:08:22,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:08:22,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:08:22,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:08:22,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:08:22,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:08:22,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:08:22,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:08:22,297 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:08:22,297 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:08:22,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:08:22,297 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:08:22,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:08:22,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:08:22,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:08:22,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:22,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:08:22,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:08:22,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:08:22,301 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:08:22,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:08:22,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:08:22,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:08:22,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:08:22,303 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b77735b82f790dcf6393a6fb65098490b7c65f26539a1354e286eeb25926e8 [2021-11-07 02:08:22,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:08:22,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:08:22,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:08:22,791 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:08:22,792 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:08:22,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c [2021-11-07 02:08:22,891 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/data/bf4101eb7/a9cf18dbeb674517acfbb6c15ef94156/FLAGdf17efc57 [2021-11-07 02:08:23,780 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:08:23,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c [2021-11-07 02:08:23,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/data/bf4101eb7/a9cf18dbeb674517acfbb6c15ef94156/FLAGdf17efc57 [2021-11-07 02:08:23,910 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/data/bf4101eb7/a9cf18dbeb674517acfbb6c15ef94156 [2021-11-07 02:08:23,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:08:23,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:08:23,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:23,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:08:23,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:08:23,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fcc73af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:23, skipping insertion in model container [2021-11-07 02:08:23,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:23" (1/1) ... [2021-11-07 02:08:23,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:08:24,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:24,579 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c[77660,77673] [2021-11-07 02:08:24,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:24,626 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:08:24,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35952d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:24, skipping insertion in model container [2021-11-07 02:08:24,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:24,628 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:08:24,631 INFO L168 Benchmark]: Toolchain (without parser) took 714.37 ms. Allocated memory is still 98.6 MB. Free memory was 55.2 MB in the beginning and 60.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:08:24,632 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 98.6 MB. Free memory is still 73.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:08:24,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.86 ms. Allocated memory is still 98.6 MB. Free memory was 55.0 MB in the beginning and 60.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:08:24,636 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 98.6 MB. Free memory is still 73.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 710.86 ms. Allocated memory is still 98.6 MB. Free memory was 55.0 MB in the beginning and 60.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85b77735b82f790dcf6393a6fb65098490b7c65f26539a1354e286eeb25926e8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:08:27,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:08:27,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:08:27,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:08:27,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:08:27,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:08:27,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:08:27,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:08:27,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:08:27,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:08:27,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:08:27,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:08:27,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:08:27,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:08:27,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:08:27,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:08:27,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:08:27,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:08:27,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:08:27,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:08:27,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:08:27,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:08:27,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:08:27,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:08:27,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:08:27,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:08:27,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:08:27,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:08:27,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:08:27,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:08:27,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:08:27,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:08:27,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:08:27,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:08:27,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:08:27,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:08:27,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:08:27,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:08:27,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:08:27,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:08:27,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:08:27,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:08:27,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:08:27,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:08:27,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:08:27,668 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:08:27,669 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:08:27,669 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:08:27,672 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:08:27,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:08:27,674 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:08:27,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:08:27,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:08:27,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:08:27,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:08:27,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:08:27,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:08:27,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:08:27,678 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:08:27,678 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:08:27,678 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:08:27,679 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:08:27,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:08:27,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:08:27,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:08:27,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:08:27,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:08:27,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:08:27,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:27,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:08:27,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:08:27,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:08:27,681 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:08:27,681 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:27,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:08:27,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:08:27,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:08:27,682 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b77735b82f790dcf6393a6fb65098490b7c65f26539a1354e286eeb25926e8 [2021-11-07 02:08:28,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:08:28,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:08:28,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:08:28,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:08:28,203 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:08:28,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c [2021-11-07 02:08:28,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/data/5e48594e3/56babdda1f3d43c1baf7a816088498f0/FLAGc9e6d2d60 [2021-11-07 02:08:29,227 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:08:29,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c [2021-11-07 02:08:29,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/data/5e48594e3/56babdda1f3d43c1baf7a816088498f0/FLAGc9e6d2d60 [2021-11-07 02:08:29,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/data/5e48594e3/56babdda1f3d43c1baf7a816088498f0 [2021-11-07 02:08:29,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:08:29,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:08:29,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:29,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:08:29,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:08:29,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:29" (1/1) ... [2021-11-07 02:08:29,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712a8b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:29, skipping insertion in model container [2021-11-07 02:08:29,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:29" (1/1) ... [2021-11-07 02:08:29,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:08:29,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:30,216 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c[77660,77673] [2021-11-07 02:08:30,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:30,253 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:08:30,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:30,414 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c[77660,77673] [2021-11-07 02:08:30,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:30,450 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:08:30,670 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c[77660,77673] [2021-11-07 02:08:30,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:30,708 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:08:30,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30 WrapperNode [2021-11-07 02:08:30,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:30,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:30,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:08:30,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:08:30,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:30,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:30,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:30,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:08:30,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:08:30,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:08:30,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:30,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:30,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:30,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:30,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:31,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:31,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:31,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:08:31,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:08:31,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:08:31,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:08:31,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:31,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:31,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:31,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:08:31,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:08:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:08:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:08:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:08:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:08:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:08:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:08:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:08:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:08:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:08:31,487 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:08:41,925 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-07 02:08:41,925 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-07 02:08:41,939 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:08:41,939 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 02:08:41,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:41 BoogieIcfgContainer [2021-11-07 02:08:41,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:08:41,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:08:41,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:08:41,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:08:41,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:08:29" (1/3) ... [2021-11-07 02:08:41,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdddb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:41, skipping insertion in model container [2021-11-07 02:08:41,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30" (2/3) ... [2021-11-07 02:08:41,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdddb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:41, skipping insertion in model container [2021-11-07 02:08:41,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:41" (3/3) ... [2021-11-07 02:08:41,955 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.16.i.cil-2.c [2021-11-07 02:08:41,963 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:08:41,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:08:42,029 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:08:42,036 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:08:42,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:08:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 157 states have (on average 1.732484076433121) internal successors, (272), 158 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:42,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 02:08:42,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:42,111 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:42,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:42,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2069453347, now seen corresponding path program 1 times [2021-11-07 02:08:42,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:42,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95783244] [2021-11-07 02:08:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:42,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:42,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:42,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:42,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:08:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:42,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:42,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:42,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:43,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:43,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95783244] [2021-11-07 02:08:43,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95783244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:43,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:43,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:43,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325866728] [2021-11-07 02:08:43,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:43,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:43,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:43,228 INFO L87 Difference]: Start difference. First operand has 159 states, 157 states have (on average 1.732484076433121) internal successors, (272), 158 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:43,668 INFO L93 Difference]: Finished difference Result 598 states and 1032 transitions. [2021-11-07 02:08:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:43,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 02:08:43,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:43,701 INFO L225 Difference]: With dead ends: 598 [2021-11-07 02:08:43,705 INFO L226 Difference]: Without dead ends: 410 [2021-11-07 02:08:43,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:43,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-07 02:08:43,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-07 02:08:43,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.5378973105134475) internal successors, (629), 409 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 629 transitions. [2021-11-07 02:08:43,826 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 629 transitions. Word has length 46 [2021-11-07 02:08:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:43,827 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 629 transitions. [2021-11-07 02:08:43,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 629 transitions. [2021-11-07 02:08:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 02:08:43,845 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:43,846 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:43,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:44,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:44,048 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:44,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:44,049 INFO L85 PathProgramCache]: Analyzing trace with hash -204372774, now seen corresponding path program 1 times [2021-11-07 02:08:44,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:44,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268980568] [2021-11-07 02:08:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:44,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:44,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:44,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:44,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:08:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:44,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:44,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:45,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:45,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:45,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268980568] [2021-11-07 02:08:45,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268980568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:45,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:45,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:45,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733348515] [2021-11-07 02:08:45,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:45,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:45,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:45,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:45,536 INFO L87 Difference]: Start difference. First operand 410 states and 629 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:46,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:46,363 INFO L93 Difference]: Finished difference Result 939 states and 1467 transitions. [2021-11-07 02:08:46,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:46,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-07 02:08:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:46,370 INFO L225 Difference]: With dead ends: 939 [2021-11-07 02:08:46,370 INFO L226 Difference]: Without dead ends: 672 [2021-11-07 02:08:46,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-11-07 02:08:46,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2021-11-07 02:08:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 1.527570789865872) internal successors, (1025), 671 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:46,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1025 transitions. [2021-11-07 02:08:46,407 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1025 transitions. Word has length 108 [2021-11-07 02:08:46,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:46,408 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 1025 transitions. [2021-11-07 02:08:46,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:46,409 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1025 transitions. [2021-11-07 02:08:46,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-07 02:08:46,413 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:46,413 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:46,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:46,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:46,628 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash -575897374, now seen corresponding path program 1 times [2021-11-07 02:08:46,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:46,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549962148] [2021-11-07 02:08:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:46,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:46,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:46,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:46,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:08:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:47,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:47,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 02:08:47,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 02:08:48,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:48,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549962148] [2021-11-07 02:08:48,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549962148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:48,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:48,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:48,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611328635] [2021-11-07 02:08:48,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:48,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:48,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:48,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:48,578 INFO L87 Difference]: Start difference. First operand 672 states and 1025 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:49,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:49,333 INFO L93 Difference]: Finished difference Result 1466 states and 2262 transitions. [2021-11-07 02:08:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:49,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2021-11-07 02:08:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:49,342 INFO L225 Difference]: With dead ends: 1466 [2021-11-07 02:08:49,343 INFO L226 Difference]: Without dead ends: 937 [2021-11-07 02:08:49,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:49,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-07 02:08:49,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2021-11-07 02:08:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 1.5213675213675213) internal successors, (1424), 936 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1424 transitions. [2021-11-07 02:08:49,388 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1424 transitions. Word has length 173 [2021-11-07 02:08:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:49,392 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1424 transitions. [2021-11-07 02:08:49,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1424 transitions. [2021-11-07 02:08:49,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-07 02:08:49,411 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:49,411 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:49,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:49,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:49,629 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:49,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:49,630 INFO L85 PathProgramCache]: Analyzing trace with hash -234376531, now seen corresponding path program 1 times [2021-11-07 02:08:49,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:49,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644189455] [2021-11-07 02:08:49,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:49,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:49,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:49,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:49,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:08:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:50,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:50,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-07 02:08:51,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-07 02:08:52,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:52,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644189455] [2021-11-07 02:08:52,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644189455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:52,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:52,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:52,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74681337] [2021-11-07 02:08:52,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:52,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:52,094 INFO L87 Difference]: Start difference. First operand 937 states and 1424 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:52,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:52,708 INFO L93 Difference]: Finished difference Result 1994 states and 3055 transitions. [2021-11-07 02:08:52,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:52,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-07 02:08:52,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:52,722 INFO L225 Difference]: With dead ends: 1994 [2021-11-07 02:08:52,722 INFO L226 Difference]: Without dead ends: 1200 [2021-11-07 02:08:52,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:52,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2021-11-07 02:08:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1200. [2021-11-07 02:08:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1199 states have (on average 1.5162635529608006) internal successors, (1818), 1199 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1818 transitions. [2021-11-07 02:08:52,781 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1818 transitions. Word has length 238 [2021-11-07 02:08:52,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:52,783 INFO L470 AbstractCegarLoop]: Abstraction has 1200 states and 1818 transitions. [2021-11-07 02:08:52,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1818 transitions. [2021-11-07 02:08:52,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-07 02:08:52,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:52,792 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:52,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:53,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:53,011 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:53,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:53,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1442995500, now seen corresponding path program 1 times [2021-11-07 02:08:53,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:53,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512173287] [2021-11-07 02:08:53,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:53,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:53,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:53,017 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:53,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:08:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:53,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:53,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 485 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-07 02:08:54,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 485 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-07 02:08:56,016 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:56,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512173287] [2021-11-07 02:08:56,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512173287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:56,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:56,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:56,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814711601] [2021-11-07 02:08:56,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:56,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:56,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:56,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:56,020 INFO L87 Difference]: Start difference. First operand 1200 states and 1818 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:56,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:56,827 INFO L93 Difference]: Finished difference Result 2520 states and 3841 transitions. [2021-11-07 02:08:56,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:56,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311 [2021-11-07 02:08:56,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:56,840 INFO L225 Difference]: With dead ends: 2520 [2021-11-07 02:08:56,840 INFO L226 Difference]: Without dead ends: 1463 [2021-11-07 02:08:56,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2021-11-07 02:08:56,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1463. [2021-11-07 02:08:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1462 states have (on average 1.5116279069767442) internal successors, (2210), 1462 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2210 transitions. [2021-11-07 02:08:56,952 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2210 transitions. Word has length 311 [2021-11-07 02:08:56,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:56,953 INFO L470 AbstractCegarLoop]: Abstraction has 1463 states and 2210 transitions. [2021-11-07 02:08:56,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:56,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2210 transitions. [2021-11-07 02:08:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-11-07 02:08:56,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:56,964 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:56,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:57,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:57,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:57,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:57,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1296017864, now seen corresponding path program 1 times [2021-11-07 02:08:57,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:57,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771858694] [2021-11-07 02:08:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:57,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:57,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:57,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:57,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:08:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:58,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:58,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 726 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2021-11-07 02:08:59,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 726 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2021-11-07 02:09:00,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:00,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771858694] [2021-11-07 02:09:00,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771858694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:00,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:00,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:00,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762792198] [2021-11-07 02:09:00,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:00,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:00,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:00,691 INFO L87 Difference]: Start difference. First operand 1463 states and 2210 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:01,497 INFO L93 Difference]: Finished difference Result 3044 states and 4620 transitions. [2021-11-07 02:09:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:01,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2021-11-07 02:09:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:01,513 INFO L225 Difference]: With dead ends: 3044 [2021-11-07 02:09:01,513 INFO L226 Difference]: Without dead ends: 1724 [2021-11-07 02:09:01,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2021-11-07 02:09:01,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2021-11-07 02:09:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 1.5078351712130005) internal successors, (2598), 1723 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2598 transitions. [2021-11-07 02:09:01,620 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2598 transitions. Word has length 384 [2021-11-07 02:09:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:01,620 INFO L470 AbstractCegarLoop]: Abstraction has 1724 states and 2598 transitions. [2021-11-07 02:09:01,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:01,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2598 transitions. [2021-11-07 02:09:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2021-11-07 02:09:01,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:01,640 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:01,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:01,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:01,863 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:09:01,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash 442748388, now seen corresponding path program 1 times [2021-11-07 02:09:01,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:01,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501502222] [2021-11-07 02:09:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:01,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:01,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:01,870 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:01,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:09:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:03,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:03,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1831 backedges. 1043 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-07 02:09:05,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1831 backedges. 1043 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-07 02:09:06,410 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:06,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501502222] [2021-11-07 02:09:06,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501502222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:06,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:06,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:06,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823894993] [2021-11-07 02:09:06,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:06,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:06,414 INFO L87 Difference]: Start difference. First operand 1724 states and 2598 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:07,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:07,023 INFO L93 Difference]: Finished difference Result 3567 states and 5396 transitions. [2021-11-07 02:09:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:07,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 456 [2021-11-07 02:09:07,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:07,039 INFO L225 Difference]: With dead ends: 3567 [2021-11-07 02:09:07,040 INFO L226 Difference]: Without dead ends: 1986 [2021-11-07 02:09:07,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:07,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-11-07 02:09:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1986. [2021-11-07 02:09:07,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1985 states have (on average 1.5037783375314862) internal successors, (2985), 1985 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2985 transitions. [2021-11-07 02:09:07,167 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2985 transitions. Word has length 456 [2021-11-07 02:09:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:07,169 INFO L470 AbstractCegarLoop]: Abstraction has 1986 states and 2985 transitions. [2021-11-07 02:09:07,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:07,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2985 transitions. [2021-11-07 02:09:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-11-07 02:09:07,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:07,178 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:07,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:07,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:07,404 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:09:07,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:07,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1209650667, now seen corresponding path program 1 times [2021-11-07 02:09:07,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:07,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331895175] [2021-11-07 02:09:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:07,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:07,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:07,413 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:07,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:09:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:09,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:09,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 1206 proven. 0 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2021-11-07 02:09:10,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 1206 proven. 0 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2021-11-07 02:09:12,013 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:12,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331895175] [2021-11-07 02:09:12,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331895175] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:12,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:12,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:12,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883271859] [2021-11-07 02:09:12,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:12,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:12,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:12,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:12,017 INFO L87 Difference]: Start difference. First operand 1986 states and 2985 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:12,952 INFO L93 Difference]: Finished difference Result 4091 states and 6168 transitions. [2021-11-07 02:09:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:12,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 501 [2021-11-07 02:09:12,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:12,970 INFO L225 Difference]: With dead ends: 4091 [2021-11-07 02:09:12,971 INFO L226 Difference]: Without dead ends: 2248 [2021-11-07 02:09:12,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 998 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2021-11-07 02:09:13,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2248. [2021-11-07 02:09:13,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 2247 states have (on average 1.4997774810858924) internal successors, (3370), 2247 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 3370 transitions. [2021-11-07 02:09:13,092 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 3370 transitions. Word has length 501 [2021-11-07 02:09:13,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:13,093 INFO L470 AbstractCegarLoop]: Abstraction has 2248 states and 3370 transitions. [2021-11-07 02:09:13,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:13,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 3370 transitions. [2021-11-07 02:09:13,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-11-07 02:09:13,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:13,105 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:13,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:13,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:13,327 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:09:13,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:13,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1531921159, now seen corresponding path program 1 times [2021-11-07 02:09:13,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:13,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900885669] [2021-11-07 02:09:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:13,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:13,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:13,332 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:13,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:09:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:15,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:15,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 1629 proven. 0 refuted. 0 times theorem prover too weak. 1381 trivial. 0 not checked. [2021-11-07 02:09:16,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 1629 proven. 0 refuted. 0 times theorem prover too weak. 1381 trivial. 0 not checked. [2021-11-07 02:09:18,373 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:18,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900885669] [2021-11-07 02:09:18,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900885669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:18,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:18,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:18,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037311635] [2021-11-07 02:09:18,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:18,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:18,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:18,376 INFO L87 Difference]: Start difference. First operand 2248 states and 3370 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:19,275 INFO L93 Difference]: Finished difference Result 4616 states and 6938 transitions. [2021-11-07 02:09:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:19,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 575 [2021-11-07 02:09:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:19,290 INFO L225 Difference]: With dead ends: 4616 [2021-11-07 02:09:19,290 INFO L226 Difference]: Without dead ends: 2511 [2021-11-07 02:09:19,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1148 GetRequests, 1146 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2021-11-07 02:09:19,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2021-11-07 02:09:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2510 states have (on average 1.49601593625498) internal successors, (3755), 2510 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3755 transitions. [2021-11-07 02:09:19,452 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3755 transitions. Word has length 575 [2021-11-07 02:09:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:19,453 INFO L470 AbstractCegarLoop]: Abstraction has 2511 states and 3755 transitions. [2021-11-07 02:09:19,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3755 transitions. [2021-11-07 02:09:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2021-11-07 02:09:19,467 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:19,468 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:19,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:19,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:19,692 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:09:19,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:19,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1391653982, now seen corresponding path program 1 times [2021-11-07 02:09:19,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:19,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112375568] [2021-11-07 02:09:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:19,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:19,699 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:19,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:09:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:29,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:09:29,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:29,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 02:09:29,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 02:09:29,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:29,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 02:09:29,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:29,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-07 02:09:29,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-07 02:09:29,853 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-07 02:09:29,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 717 treesize of output 669 [2021-11-07 02:09:29,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:29,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 02:09:29,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 210 [2021-11-07 02:09:29,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:29,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:29,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:29,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:29,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:29,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 101 [2021-11-07 02:09:30,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 02:09:30,268 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-07 02:09:30,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 02:09:30,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:30,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 02:09:30,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-07 02:09:30,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-07 02:09:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3946 trivial. 0 not checked. [2021-11-07 02:09:32,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:34,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:34,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 02:09:34,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:34,564 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-07 02:09:34,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:34,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-07 02:09:34,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:34,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-07 02:09:34,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:34,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-07 02:09:34,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:34,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-07 02:09:34,819 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:34,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-07 02:09:34,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:34,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-07 02:09:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3946 trivial. 0 not checked. [2021-11-07 02:09:35,453 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:35,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112375568] [2021-11-07 02:09:35,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112375568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:35,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:35,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:09:35,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781424689] [2021-11-07 02:09:35,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:09:35,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:35,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:09:35,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:09:35,458 INFO L87 Difference]: Start difference. First operand 2511 states and 3755 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:57,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:57,656 INFO L93 Difference]: Finished difference Result 5019 states and 7506 transitions. [2021-11-07 02:09:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:09:57,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 649 [2021-11-07 02:09:57,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:57,679 INFO L225 Difference]: With dead ends: 5019 [2021-11-07 02:09:57,679 INFO L226 Difference]: Without dead ends: 2511 [2021-11-07 02:09:57,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1298 GetRequests, 1289 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:09:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2021-11-07 02:09:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2021-11-07 02:09:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2510 states have (on average 1.4956175298804781) internal successors, (3754), 2510 states have internal predecessors, (3754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3754 transitions. [2021-11-07 02:09:57,793 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3754 transitions. Word has length 649 [2021-11-07 02:09:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:57,794 INFO L470 AbstractCegarLoop]: Abstraction has 2511 states and 3754 transitions. [2021-11-07 02:09:57,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3754 transitions. [2021-11-07 02:09:57,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2021-11-07 02:09:57,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:57,828 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:57,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:58,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:58,044 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:09:58,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash -525546784, now seen corresponding path program 1 times [2021-11-07 02:09:58,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:58,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476596390] [2021-11-07 02:09:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:58,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:58,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:58,049 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:58,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:10:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:33,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:10:33,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:34,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:34,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:34,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:34,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:34,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:34,351 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-07 02:10:34,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-07 02:10:34,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:34,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:34,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:34,910 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 02:10:34,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-07 02:10:37,659 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:10:37,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-07 02:10:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 1380 proven. 0 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2021-11-07 02:10:37,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 1380 proven. 0 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2021-11-07 02:10:39,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:39,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476596390] [2021-11-07 02:10:39,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476596390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:39,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:39,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:10:39,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653596069] [2021-11-07 02:10:39,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:10:39,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:39,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:10:39,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:10:39,404 INFO L87 Difference]: Start difference. First operand 2511 states and 3754 transitions. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:40,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:40,113 INFO L93 Difference]: Finished difference Result 11261 states and 16909 transitions. [2021-11-07 02:11:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:11:40,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 649 [2021-11-07 02:11:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:40,167 INFO L225 Difference]: With dead ends: 11261 [2021-11-07 02:11:40,168 INFO L226 Difference]: Without dead ends: 8760 [2021-11-07 02:11:40,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1299 GetRequests, 1290 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:11:40,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8760 states. [2021-11-07 02:11:40,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8760 to 3324. [2021-11-07 02:11:40,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 3323 states have (on average 1.57448089076136) internal successors, (5232), 3323 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 5232 transitions. [2021-11-07 02:11:40,478 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 5232 transitions. Word has length 649 [2021-11-07 02:11:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:40,479 INFO L470 AbstractCegarLoop]: Abstraction has 3324 states and 5232 transitions. [2021-11-07 02:11:40,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 5232 transitions. [2021-11-07 02:11:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2021-11-07 02:11:40,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:40,491 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:11:40,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:40,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:11:40,707 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:11:40,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:40,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1487182882, now seen corresponding path program 1 times [2021-11-07 02:11:40,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:40,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617305258] [2021-11-07 02:11:40,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:40,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:40,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:40,714 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:40,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:14:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:45,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:14:45,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:45,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:14:45,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:14:45,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:14:45,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:14:45,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:14:45,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:14:45,885 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-07 02:14:45,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-11-07 02:14:45,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:14:45,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:14:45,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:14:46,356 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 02:14:46,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 72 treesize of output 89 [2021-11-07 02:14:47,743 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:14:47,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 38 [2021-11-07 02:14:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 733 proven. 0 refuted. 0 times theorem prover too weak. 3213 trivial. 0 not checked. [2021-11-07 02:14:49,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 733 proven. 0 refuted. 0 times theorem prover too weak. 3213 trivial. 0 not checked. [2021-11-07 02:14:51,365 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:51,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617305258] [2021-11-07 02:14:51,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617305258] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:51,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:51,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:14:51,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484570232] [2021-11-07 02:14:51,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:14:51,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:51,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:14:51,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:14:51,368 INFO L87 Difference]: Start difference. First operand 3324 states and 5232 transitions. Second operand has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:30,144 INFO L93 Difference]: Finished difference Result 11027 states and 17075 transitions. [2021-11-07 02:15:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:15:30,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 649 [2021-11-07 02:15:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:30,175 INFO L225 Difference]: With dead ends: 11027 [2021-11-07 02:15:30,176 INFO L226 Difference]: Without dead ends: 7713 [2021-11-07 02:15:30,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1298 GetRequests, 1290 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7713 states. [2021-11-07 02:15:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7713 to 4212. [2021-11-07 02:15:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4211 states have (on average 1.6112562336737117) internal successors, (6785), 4211 states have internal predecessors, (6785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 6785 transitions. [2021-11-07 02:15:30,485 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 6785 transitions. Word has length 649 [2021-11-07 02:15:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:30,486 INFO L470 AbstractCegarLoop]: Abstraction has 4212 states and 6785 transitions. [2021-11-07 02:15:30,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:30,486 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 6785 transitions. [2021-11-07 02:15:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2021-11-07 02:15:30,497 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:30,498 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:15:30,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:30,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:15:30,711 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:15:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash -681737376, now seen corresponding path program 1 times [2021-11-07 02:15:30,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:15:30,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114864770] [2021-11-07 02:15:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:30,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:15:30,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:15:30,718 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:15:30,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bd901b7-1ada-476e-bd48-f4d0c93662f9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process